via82c686.c revision 102010
164439Scg/* 264439Scg * Copyright (c) 2000 David Jones <dej@ox.org> 364439Scg * All rights reserved. 464439Scg * 564439Scg * Redistribution and use in source and binary forms, with or without 664439Scg * modification, are permitted provided that the following conditions 764439Scg * are met: 864439Scg * 1. Redistributions of source code must retain the above copyright 964439Scg * notice, this list of conditions and the following disclaimer. 1064439Scg * 2. Redistributions in binary form must reproduce the above copyright 1164439Scg * notice, this list of conditions and the following disclaimer in the 1264439Scg * documentation and/or other materials provided with the distribution. 1364439Scg * 1464439Scg * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1564439Scg * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1664439Scg * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1764439Scg * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1864439Scg * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1964439Scg * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2064439Scg * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2164439Scg * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2264439Scg * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2364439Scg * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2464439Scg * SUCH DAMAGE. 2564439Scg */ 2664439Scg 2764439Scg#include <dev/sound/pcm/sound.h> 2864439Scg#include <dev/sound/pcm/ac97.h> 2964439Scg 3064439Scg#include <pci/pcireg.h> 3164439Scg#include <pci/pcivar.h> 3264439Scg#include <sys/sysctl.h> 3364439Scg 3464439Scg#include <dev/sound/pci/via82c686.h> 3564439Scg 3682180ScgSND_DECLARE_FILE("$FreeBSD: head/sys/dev/sound/pci/via82c686.c 102010 2002-08-17 16:13:29Z orion $"); 3782180Scg 38102010Sorion#define VIA_PCI_ID 0x30581106 3974763Scg#define NSEGS 4 /* Number of segments in SGD table */ 4064439Scg 4164439Scg#define SEGS_PER_CHAN (NSEGS/2) 4264439Scg 4370346Scg#define TIMEOUT 50 4484658Scg#define VIA_DEFAULT_BUFSZ 0x1000 4570346Scg 4664439Scg#undef DEB 4764439Scg#define DEB(x) 4864439Scg 4970346Scg/* we rely on this struct being packed to 64 bits */ 5070346Scgstruct via_dma_op { 5170346Scg u_int32_t ptr; 5270346Scg u_int32_t flags; 5370346Scg#define VIA_DMAOP_EOL 0x80000000 5470346Scg#define VIA_DMAOP_FLAG 0x40000000 5570346Scg#define VIA_DMAOP_STOP 0x20000000 5670346Scg#define VIA_DMAOP_COUNT(x) ((x)&0x00FFFFFF) 5770346Scg}; 5870346Scg 5964439Scgstruct via_info; 6064439Scg 6164439Scgstruct via_chinfo { 6264439Scg struct via_info *parent; 6374763Scg struct pcm_channel *channel; 6474763Scg struct snd_dbuf *buffer; 6574763Scg struct via_dma_op *sgd_table; 6674763Scg int dir, blksz; 67102010Sorion int base, count, mode, ctrl; 6864439Scg}; 6964439Scg 7064439Scgstruct via_info { 7164439Scg bus_space_tag_t st; 7264439Scg bus_space_handle_t sh; 7374797Scg bus_dma_tag_t parent_dmat; 7474797Scg bus_dma_tag_t sgd_dmat; 7574763Scg bus_dmamap_t sgd_dmamap; 7664439Scg 7765644Scg struct resource *reg, *irq; 7865644Scg int regid, irqid; 7965644Scg void *ih; 8074763Scg struct ac97_info *codec; 8165644Scg 8284658Scg unsigned int bufsz; 8384658Scg 8464439Scg struct via_chinfo pch, rch; 8564439Scg struct via_dma_op *sgd_table; 8674797Scg u_int16_t codec_caps; 8764439Scg}; 8864439Scg 8974763Scgstatic u_int32_t via_fmt[] = { 9064881Scg AFMT_U8, 9164881Scg AFMT_STEREO | AFMT_U8, 9264881Scg AFMT_S16_LE, 9364881Scg AFMT_STEREO | AFMT_S16_LE, 9464881Scg 0 9564439Scg}; 9674763Scgstatic struct pcmchan_caps via_vracaps = {4000, 48000, via_fmt, 0}; 9774763Scgstatic struct pcmchan_caps via_caps = {48000, 48000, via_fmt, 0}; 9864439Scg 9964439Scgstatic u_int32_t 10064439Scgvia_rd(struct via_info *via, int regno, int size) 10164439Scg{ 102102010Sorion 10364439Scg switch (size) { 10464439Scg case 1: 10564439Scg return bus_space_read_1(via->st, via->sh, regno); 10664439Scg case 2: 10764439Scg return bus_space_read_2(via->st, via->sh, regno); 10864439Scg case 4: 10964439Scg return bus_space_read_4(via->st, via->sh, regno); 11064439Scg default: 11164439Scg return 0xFFFFFFFF; 11264439Scg } 11364439Scg} 11464439Scg 11564439Scg 11664439Scgstatic void 11764439Scgvia_wr(struct via_info *via, int regno, u_int32_t data, int size) 11864439Scg{ 11964439Scg 12064439Scg switch (size) { 12164439Scg case 1: 12264439Scg bus_space_write_1(via->st, via->sh, regno, data); 12364439Scg break; 12464439Scg case 2: 12564439Scg bus_space_write_2(via->st, via->sh, regno, data); 12664439Scg break; 12764439Scg case 4: 12864439Scg bus_space_write_4(via->st, via->sh, regno, data); 12964439Scg break; 13064439Scg } 13164439Scg} 13264439Scg 13370134Scg/* -------------------------------------------------------------------- */ 13470134Scg/* Codec interface */ 13564439Scg 13670134Scgstatic int 13764439Scgvia_waitready_codec(struct via_info *via) 13864439Scg{ 13964439Scg int i; 14064439Scg 14164439Scg /* poll until codec not busy */ 14264439Scg for (i = 0; (i < TIMEOUT) && 14364439Scg (via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_BUSY); i++) 14464439Scg DELAY(1); 14564439Scg if (i >= TIMEOUT) { 14664439Scg printf("via: codec busy\n"); 14764439Scg return 1; 14864439Scg } 14964439Scg 15064439Scg return 0; 15164439Scg} 15264439Scg 15364439Scg 15470134Scgstatic int 15564439Scgvia_waitvalid_codec(struct via_info *via) 15664439Scg{ 15764439Scg int i; 15864439Scg 15964439Scg /* poll until codec valid */ 16064439Scg for (i = 0; (i < TIMEOUT) && 16164439Scg !(via_rd(via, VIA_CODEC_CTL, 4) & VIA_CODEC_PRIVALID); i++) 16264439Scg DELAY(1); 16364439Scg if (i >= TIMEOUT) { 16464439Scg printf("via: codec invalid\n"); 16564439Scg return 1; 16664439Scg } 16764439Scg 16864439Scg return 0; 16964439Scg} 17064439Scg 17164439Scg 17270134Scgstatic int 17370134Scgvia_write_codec(kobj_t obj, void *addr, int reg, u_int32_t val) 17464439Scg{ 17564439Scg struct via_info *via = addr; 17664439Scg 17770134Scg if (via_waitready_codec(via)) return -1; 17864439Scg 179102010Sorion via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_INDEX(reg) | val, 4); 18070134Scg 18170134Scg return 0; 18264439Scg} 18364439Scg 18464439Scg 18570134Scgstatic int 18670134Scgvia_read_codec(kobj_t obj, void *addr, int reg) 18764439Scg{ 18864439Scg struct via_info *via = addr; 18964439Scg 19064439Scg if (via_waitready_codec(via)) 19174763Scg return -1; 19264439Scg 19374763Scg via_wr(via, VIA_CODEC_CTL, VIA_CODEC_PRIVALID | VIA_CODEC_READ | VIA_CODEC_INDEX(reg),4); 19464439Scg 19564439Scg if (via_waitready_codec(via)) 19674763Scg return -1; 19764439Scg 19864439Scg if (via_waitvalid_codec(via)) 19974763Scg return -1; 20064439Scg 20164439Scg return via_rd(via, VIA_CODEC_CTL, 2); 20264439Scg} 20364439Scg 20470134Scgstatic kobj_method_t via_ac97_methods[] = { 20570134Scg KOBJMETHOD(ac97_read, via_read_codec), 20670134Scg KOBJMETHOD(ac97_write, via_write_codec), 20770134Scg { 0, 0 } 20870134Scg}; 20970134ScgAC97_DECLARE(via_ac97); 21064439Scg 21170134Scg/* -------------------------------------------------------------------- */ 21270134Scg 21364439Scgstatic int 21474763Scgvia_buildsgdt(struct via_chinfo *ch) 21564439Scg{ 21674763Scg u_int32_t phys_addr, flag; 21774763Scg int i, segs, seg_size; 21864439Scg 21964439Scg /* 22064439Scg * Build the scatter/gather DMA (SGD) table. 22164439Scg * There are four slots in the table: two for play, two for record. 22264439Scg * This creates two half-buffers, one of which is playing; the other 22364439Scg * is feeding. 22464439Scg */ 22574763Scg seg_size = ch->blksz; 22674763Scg segs = sndbuf_getsize(ch->buffer) / seg_size; 22774763Scg phys_addr = vtophys(sndbuf_getbuf(ch->buffer)); 22864439Scg 22974763Scg for (i = 0; i < segs; i++) { 23074763Scg flag = (i == segs - 1)? VIA_DMAOP_EOL : VIA_DMAOP_FLAG; 23174763Scg ch->sgd_table[i].ptr = phys_addr + (i * seg_size); 23274763Scg ch->sgd_table[i].flags = flag | seg_size; 23364439Scg } 23464439Scg 23564439Scg return 0; 23664439Scg} 23764439Scg 23874763Scg/* channel interface */ 23974763Scgstatic void * 240102010Sorionviachan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir) 24174763Scg{ 24274763Scg struct via_info *via = devinfo; 24374763Scg struct via_chinfo *ch = (dir == PCMDIR_PLAY)? &via->pch : &via->rch; 24474763Scg 24574763Scg ch->parent = via; 24674763Scg ch->channel = c; 24774763Scg ch->buffer = b; 24874763Scg ch->dir = dir; 24974763Scg ch->sgd_table = &via->sgd_table[(dir == PCMDIR_PLAY)? 0 : SEGS_PER_CHAN]; 25074763Scg if (ch->dir == PCMDIR_PLAY) { 251102010Sorion ch->base = VIA_PLAY_DMAOPS_BASE; 252102010Sorion ch->count = VIA_PLAY_DMAOPS_COUNT; 253102010Sorion ch->ctrl = VIA_PLAY_CONTROL; 254102010Sorion ch->mode = VIA_PLAY_MODE; 25574763Scg } else { 256102010Sorion ch->base = VIA_RECORD_DMAOPS_BASE; 257102010Sorion ch->count = VIA_RECORD_DMAOPS_COUNT; 258102010Sorion ch->ctrl = VIA_RECORD_CONTROL; 259102010Sorion ch->mode = VIA_RECORD_MODE; 26074763Scg } 26174763Scg 26284658Scg if (sndbuf_alloc(ch->buffer, via->parent_dmat, via->bufsz) == -1) 26374763Scg return NULL; 26474763Scg return ch; 26574763Scg} 26674763Scg 26764439Scgstatic int 26870134Scgviachan_setformat(kobj_t obj, void *data, u_int32_t format) 26964439Scg{ 27064439Scg struct via_chinfo *ch = data; 27164439Scg struct via_info *via = ch->parent; 272102010Sorion int mode, mode_set; 27364439Scg 274102010Sorion mode_set = 0; 27564439Scg if (format & AFMT_STEREO) 276102010Sorion mode_set |= VIA_RPMODE_STEREO; 27764439Scg if (format & AFMT_S16_LE) 278102010Sorion mode_set |= VIA_RPMODE_16BIT; 27964439Scg 280102010Sorion DEB(printf("set format: dir = %d, format=%x\n", ch->dir, format)); 281102010Sorion mode = via_rd(via, ch->mode, 1); 282102010Sorion mode &= ~(VIA_RPMODE_16BIT | VIA_RPMODE_STEREO); 283102010Sorion mode |= mode_set; 284102010Sorion via_wr(via, ch->mode, mode, 1); 285102010Sorion 28664439Scg return 0; 28764439Scg} 28864439Scg 28964439Scgstatic int 29070134Scgviachan_setspeed(kobj_t obj, void *data, u_int32_t speed) 29164439Scg{ 29264439Scg struct via_chinfo *ch = data; 29364439Scg struct via_info *via = ch->parent; 29474763Scg int reg; 29564439Scg 29664439Scg /* 29764439Scg * Basic AC'97 defines a 48 kHz sample rate only. For other rates, 29864439Scg * upsampling is required. 29964439Scg * 30064439Scg * The VT82C686A does not perform upsampling, and neither do we. 30164439Scg * If the codec supports variable-rate audio (i.e. does the upsampling 30264439Scg * itself), then negotiate the rate with the codec. Otherwise, 30364439Scg * return 48 kHz cuz that's all you got. 30464439Scg */ 30574763Scg if (via->codec_caps & AC97_EXTCAP_VRA) { 30674763Scg reg = (ch->dir == PCMDIR_PLAY)? AC97_REGEXT_FDACRATE : AC97_REGEXT_LADCRATE; 30774763Scg return ac97_setrate(via->codec, reg, speed); 30874763Scg } else 30974763Scg return 48000; 31064439Scg} 31164439Scg 31264439Scgstatic int 31370134Scgviachan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize) 31464439Scg{ 31564439Scg struct via_chinfo *ch = data; 31664439Scg 31774763Scg ch->blksz = blocksize; 31874763Scg sndbuf_resize(ch->buffer, SEGS_PER_CHAN, ch->blksz); 31974763Scg 32074763Scg return ch->blksz; 32164439Scg} 32264439Scg 32364439Scgstatic int 32470134Scgviachan_trigger(kobj_t obj, void *data, int go) 32564439Scg{ 32664439Scg struct via_chinfo *ch = data; 32764439Scg struct via_info *via = ch->parent; 328102010Sorion struct via_dma_op *ado; 32964439Scg 330102010Sorion if (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD) 331102010Sorion return 0; 332102010Sorion 333102010Sorion ado = ch->sgd_table; 334102010Sorion DEB(printf("ado located at va=%p pa=%x\n", ado, vtophys(ado))); 335102010Sorion 336102010Sorion if (go == PCMTRIG_START) { 33774763Scg via_buildsgdt(ch); 338102010Sorion via_wr(via, ch->base, vtophys(ado), 4); 339102010Sorion via_wr(via, ch->ctrl, VIA_RPCTRL_START, 1); 340102010Sorion } else 341102010Sorion via_wr(via, ch->ctrl, VIA_RPCTRL_TERMINATE, 1); 342102010Sorion 343102010Sorion DEB(printf("viachan_trigger: go=%d\n", go)); 34464439Scg return 0; 34564439Scg} 34664439Scg 34764439Scgstatic int 34870134Scgviachan_getptr(kobj_t obj, void *data) 34964439Scg{ 35064439Scg struct via_chinfo *ch = data; 35164439Scg struct via_info *via = ch->parent; 35264439Scg struct via_dma_op *ado; 35374763Scg int ptr, base, base1, len, seg; 35464439Scg 35574763Scg ado = ch->sgd_table; 356102010Sorion base1 = via_rd(via, ch->base, 4); 357102010Sorion len = via_rd(via, ch->count, 4); 358102010Sorion base = via_rd(via, ch->base, 4); 35974763Scg if (base != base1) /* Avoid race hazard */ 360102010Sorion len = via_rd(via, ch->count, 4); 36164439Scg 36274797Scg DEB(printf("viachan_getptr: len / base = %x / %x\n", len, base)); 36364439Scg 36474763Scg /* Base points to SGD segment to do, one past current */ 36564439Scg 36674797Scg /* Determine how many segments have been done */ 36774797Scg seg = (base - vtophys(ado)) / sizeof(struct via_dma_op); 36874763Scg if (seg == 0) 36974763Scg seg = SEGS_PER_CHAN; 37064439Scg 37174797Scg /* Now work out offset: seg less count */ 37274763Scg ptr = (seg * sndbuf_getsize(ch->buffer) / SEGS_PER_CHAN) - len; 37374763Scg if (ch->dir == PCMDIR_REC) { 37464439Scg /* DMA appears to operate on memory 'lines' of 32 bytes */ 37564439Scg /* so don't return any part line - it isn't in RAM yet */ 37664439Scg ptr = ptr & ~0x1f; 37774763Scg } 37874763Scg 37974797Scg DEB(printf("return ptr=%d\n", ptr)); 38074797Scg return ptr; 38164439Scg} 38264439Scg 38374763Scgstatic struct pcmchan_caps * 38470134Scgviachan_getcaps(kobj_t obj, void *data) 38564439Scg{ 38664439Scg struct via_chinfo *ch = data; 38774763Scg struct via_info *via = ch->parent; 38874763Scg 38974763Scg return (via->codec_caps & AC97_EXTCAP_VRA)? &via_vracaps : &via_caps; 39064439Scg} 39164439Scg 39270134Scgstatic kobj_method_t viachan_methods[] = { 39370134Scg KOBJMETHOD(channel_init, viachan_init), 39470134Scg KOBJMETHOD(channel_setformat, viachan_setformat), 39570134Scg KOBJMETHOD(channel_setspeed, viachan_setspeed), 39670134Scg KOBJMETHOD(channel_setblocksize, viachan_setblocksize), 39770134Scg KOBJMETHOD(channel_trigger, viachan_trigger), 39870134Scg KOBJMETHOD(channel_getptr, viachan_getptr), 39970134Scg KOBJMETHOD(channel_getcaps, viachan_getcaps), 40070134Scg { 0, 0 } 40170134Scg}; 40270134ScgCHANNEL_DECLARE(viachan); 40370134Scg 40470134Scg/* -------------------------------------------------------------------- */ 40570134Scg 40664439Scgstatic void 40764439Scgvia_intr(void *p) 40864439Scg{ 40964439Scg struct via_info *via = p; 410102010Sorion int st; 41164439Scg 412102010Sorion /* DEB(printf("viachan_intr\n")); */ 413102010Sorion /* Read channel */ 414102010Sorion st = via_rd(via, VIA_PLAY_STAT, 1); 415102010Sorion if (st & VIA_RPSTAT_INTR) { 416102010Sorion via_wr(via, VIA_PLAY_STAT, VIA_RPSTAT_INTR, 1); 41764439Scg chn_intr(via->pch.channel); 41864439Scg } 419102010Sorion 420102010Sorion /* Write channel */ 421102010Sorion st = via_rd(via, VIA_RECORD_STAT, 1); 422102010Sorion if (st & VIA_RPSTAT_INTR) { 423102010Sorion via_wr(via, VIA_RECORD_STAT, VIA_RPSTAT_INTR, 1); 42464439Scg chn_intr(via->rch.channel); 42564439Scg } 42664439Scg} 42764439Scg 42870134Scg/* 42970134Scg * Probe and attach the card 43070134Scg */ 43170134Scgstatic int 43270134Scgvia_probe(device_t dev) 43370134Scg{ 434102010Sorion if (pci_get_devid(dev) == VIA_PCI_ID) { 435102010Sorion device_set_desc(dev, "VIA VT82C686A"); 436102010Sorion return 0; 43770134Scg } 43870134Scg return ENXIO; 43970134Scg} 44064439Scg 44170134Scg 44274763Scgstatic void 44374763Scgdma_cb(void *p, bus_dma_segment_t *bds, int a, int b) 44470134Scg{ 44570134Scg} 44670134Scg 447102010Sorion 44870134Scgstatic int 44970134Scgvia_attach(device_t dev) 45070134Scg{ 45170134Scg struct via_info *via = 0; 45274797Scg char status[SND_STATUSLEN]; 45374797Scg u_int32_t data; 45470134Scg 45578564Sgreid if ((via = malloc(sizeof *via, M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 45670134Scg device_printf(dev, "cannot allocate softc\n"); 45770134Scg return ENXIO; 45870134Scg } 45970134Scg 46070134Scg /* Get resources */ 46170134Scg data = pci_read_config(dev, PCIR_COMMAND, 2); 46270134Scg data |= (PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN); 46370134Scg pci_write_config(dev, PCIR_COMMAND, data, 2); 46470134Scg data = pci_read_config(dev, PCIR_COMMAND, 2); 46570134Scg 46670134Scg pci_write_config(dev, VIA_PCICONF_MISC, 467102010Sorion VIA_PCICONF_ACLINKENAB | VIA_PCICONF_ACSGD | VIA_PCICONF_ACNOTRST | VIA_PCICONF_ACVSR, 1); 46870134Scg 46970134Scg via->regid = PCIR_MAPS; 470102010Sorion via->reg = bus_alloc_resource(dev, SYS_RES_IOPORT, &via->regid, 0, ~0, 1, RF_ACTIVE); 47170134Scg if (!via->reg) { 47270345Scg device_printf(dev, "cannot allocate bus resource."); 47370134Scg goto bad; 47470134Scg } 47570134Scg via->st = rman_get_bustag(via->reg); 47670134Scg via->sh = rman_get_bushandle(via->reg); 47770134Scg 47884658Scg via->bufsz = pcm_getbuffersize(dev, 4096, VIA_DEFAULT_BUFSZ, 65536); 47984658Scg 48070134Scg via->irqid = 0; 481102010Sorion via->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &via->irqid, 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); 482102010Sorion if (!via->irq || snd_setup_intr(dev, via->irq, 0, via_intr, via, &via->ih)) { 48370134Scg device_printf(dev, "unable to map interrupt\n"); 48470134Scg goto bad; 48570134Scg } 48670134Scg 487102010Sorion via_wr(via, VIA_PLAY_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 488102010Sorion via_wr(via, VIA_RECORD_MODE, VIA_RPMODE_AUTOSTART | VIA_RPMODE_INTR_FLAG | VIA_RPMODE_INTR_EOL, 1); 48970134Scg 49074763Scg via->codec = AC97_CREATE(dev, via, via_ac97); 49174763Scg if (!via->codec) 49274763Scg goto bad; 49370134Scg 49474763Scg mixer_init(dev, ac97_getmixerclass(), via->codec); 49570134Scg 49674763Scg via->codec_caps = ac97_getextcaps(via->codec); 49786706Sorion ac97_setextmode(via->codec, 49886706Sorion via->codec_caps & (AC97_EXTCAP_VRA | AC97_EXTCAP_VRM)); 49970134Scg 50070134Scg /* DMA tag for buffers */ 50170134Scg if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0, 50270134Scg /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 50370134Scg /*highaddr*/BUS_SPACE_MAXADDR, 50470134Scg /*filter*/NULL, /*filterarg*/NULL, 50584658Scg /*maxsize*/via->bufsz, /*nsegments*/1, /*maxsegz*/0x3ffff, 50670134Scg /*flags*/0, &via->parent_dmat) != 0) { 50770134Scg device_printf(dev, "unable to create dma tag\n"); 50870134Scg goto bad; 50970134Scg } 51070134Scg 51170134Scg /* 51270134Scg * DMA tag for SGD table. The 686 uses scatter/gather DMA and 51370134Scg * requires a list in memory of work to do. We need only 16 bytes 51470134Scg * for this list, and it is wasteful to allocate 16K. 51570134Scg */ 51670134Scg if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0, 51770134Scg /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 51870134Scg /*highaddr*/BUS_SPACE_MAXADDR, 51970134Scg /*filter*/NULL, /*filterarg*/NULL, 52070134Scg /*maxsize*/NSEGS * sizeof(struct via_dma_op), 52170134Scg /*nsegments*/1, /*maxsegz*/0x3ffff, 52270134Scg /*flags*/0, &via->sgd_dmat) != 0) { 52370134Scg device_printf(dev, "unable to create dma tag\n"); 52470134Scg goto bad; 52570134Scg } 52670134Scg 52774763Scg if (bus_dmamem_alloc(via->sgd_dmat, (void **)&via->sgd_table, BUS_DMA_NOWAIT, &via->sgd_dmamap) == -1) 52874763Scg goto bad; 52974763Scg if (bus_dmamap_load(via->sgd_dmat, via->sgd_dmamap, via->sgd_table, NSEGS * sizeof(struct via_dma_op), dma_cb, 0, 0)) 53074763Scg goto bad; 53170134Scg 53274763Scg snprintf(status, SND_STATUSLEN, "at io 0x%lx irq %ld", rman_get_start(via->reg), rman_get_start(via->irq)); 53370134Scg 53470134Scg /* Register */ 53570134Scg if (pcm_register(dev, via, 1, 1)) goto bad; 536102010Sorion pcm_addchan(dev, PCMDIR_PLAY, &viachan_class, via); 537102010Sorion pcm_addchan(dev, PCMDIR_REC, &viachan_class, via); 53870134Scg pcm_setstatus(dev, status); 53970134Scg return 0; 54070134Scgbad: 54174763Scg if (via->codec) ac97_destroy(via->codec); 54270134Scg if (via->reg) bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 54370134Scg if (via->ih) bus_teardown_intr(dev, via->irq, via->ih); 54470134Scg if (via->irq) bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 54570134Scg if (via->parent_dmat) bus_dma_tag_destroy(via->parent_dmat); 54674763Scg if (via->sgd_dmamap) bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 54770134Scg if (via->sgd_dmat) bus_dma_tag_destroy(via->sgd_dmat); 54870134Scg if (via) free(via, M_DEVBUF); 54970134Scg return ENXIO; 55070134Scg} 55170134Scg 55270134Scgstatic int 55370134Scgvia_detach(device_t dev) 55470134Scg{ 55570134Scg int r; 55670134Scg struct via_info *via = 0; 55770134Scg 55870134Scg r = pcm_unregister(dev); 55970134Scg if (r) 56070134Scg return r; 56170134Scg 56270134Scg via = pcm_getdevinfo(dev); 56370134Scg bus_release_resource(dev, SYS_RES_IOPORT, via->regid, via->reg); 56470134Scg bus_teardown_intr(dev, via->irq, via->ih); 56570134Scg bus_release_resource(dev, SYS_RES_IRQ, via->irqid, via->irq); 56670134Scg bus_dma_tag_destroy(via->parent_dmat); 56774763Scg bus_dmamap_unload(via->sgd_dmat, via->sgd_dmamap); 56870134Scg bus_dma_tag_destroy(via->sgd_dmat); 56970134Scg free(via, M_DEVBUF); 57070134Scg return 0; 57170134Scg} 57270134Scg 57370134Scg 57470134Scgstatic device_method_t via_methods[] = { 57570134Scg DEVMETHOD(device_probe, via_probe), 57670134Scg DEVMETHOD(device_attach, via_attach), 57770134Scg DEVMETHOD(device_detach, via_detach), 57870134Scg { 0, 0} 57970134Scg}; 58070134Scg 58170134Scgstatic driver_t via_driver = { 58270134Scg "pcm", 58370134Scg via_methods, 58482180Scg PCM_SOFTC_SIZE, 58570134Scg}; 58670134Scg 58785441SjhbDRIVER_MODULE(snd_via82c686, pci, via_driver, pcm_devclass, 0, 0); 58885441SjhbMODULE_DEPEND(snd_via82c686, snd_pcm, PCM_MINVER, PCM_PREFVER, PCM_MAXVER); 58985441SjhbMODULE_VERSION(snd_via82c686, 1); 590